DiFFuZz

Verified answer

1 молекул CO2 - 44 а.е.м*1.66*10^-24г/а.е.м

x молекул CO2 - 15г

x= 15÷44*1.66*10^-24г/а.е.м^-1= 2.05*10^23 молекул

Alexei78

Verified answer

Дано

m(CO2) = 15 g

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N(CO2)-?

M(CO2) = 12+16*2 = 44 g/mol

N(A) = 6.02*10^23 молекул

N(CO2) = m(CO2) / M(CO2) * N(A) = 15/44 * 6.02*10^23 = 2.0523*10^23 молекул

ответ 2.0523*10^23 молекул